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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Diagnostic Trouble Codes (DTCS), Symptom Tests And R & I) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Automatic Back Door Control Unit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE, FUSIBLE LINK AND CIRCUIT BREAKER

    Check that the following fuse, fusible link and circuit breaker are not fusing.

    Fuse and fusible link No. Signal name
    T (30A) Battery power supply
    9 (10A)
    4 (10A) Ignition power supply

    Is the fuse fusing?

    YES 

    Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is blown.

    NO 

    GO TO STEP 2. 

  2. CHECK POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect automatic back door control module connector.
    3. Check voltage between automatic back door control module harness connector and ground.
      (+) (-)  
      Condition
      Voltage
      (Approx.)
      Automatic back door control module
      Connector Terminal
      B26 9 Ground Ignition switch ON Batteryvoltage
      10 -
      28

    Is the measurement value normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair or replace harness.

  3. CHECK GROUND CIRCUIT

    Check continuity between automatic back door control module harness connector and ground.

    Automatic back door control module Ground Continuity
    Connector Terminal
    B26 34 Existed

    Does continuity exist?

    YES 

    INSPECTION END

    NO 

    Repair or replace harness.